CN215471086U

CN215471086U - Elbow die for large-diameter steel pipe

Info

Publication number: CN215471086U
Application number: CN202121420796.8U
Authority: CN
Inventors: 张海荣; 夏新芳
Original assignee: Shaoxing Keqiao Binhai Water Supply Co ltd
Current assignee: Shaoxing Keqiao Binhai Water Supply Co ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2022-01-11
Anticipated expiration: 2031-06-24

Abstract

The utility model discloses an elbow mould for a large-diameter steel pipe, which comprises two straight pipes and a bendable bent pipe, wherein the two straight pipes are respectively positioned at the two ends of the bent pipe, and the bent pipe and the straight pipes can axially extend and retract. The mould can simulate the positions of two ends and the central point of the elbow, determine the length and the outer diameter of the straight pipe, the included angle of the elbow and other parameters, and pre-process the large-caliber steel elbow by taking the parameters as a template, thereby improving the installation and rush repair efficiency.

Description

Elbow die for large-diameter steel pipe

Technical Field

The utility model relates to the field of water supply pipelines, in particular to an elbow die for a large-diameter steel pipe.

Background

In the installation or rush repair of the large-caliber steel pipe, the length and the angle of the elbow can cause the work to be incapable of being normally carried out once the deviation exists. Too big can lead to the unable embedding of elbow, leads to needing the secondary cutting, influences the operating efficiency, and the undersize then needs to lean on welding behind the metal object filling gap, leads to welding quality unstable, and factor of safety reduces.

When welding the existing large-diameter steel pipe, the existing large-diameter steel pipe is mainly subjected to dotting and lofting by means of auxiliary tools such as a theodolite, a position finder and a level meter, so that the trend of the pipeline is determined. According to the confirmed trend, confirming technical parameters such as the angle of the elbow, the length of the round edge and the like, cutting and processing the self-made elbow, and then welding the self-made elbow with the pipeline.

The method for determining the direction of the pipeline by dotting and lofting through auxiliary tools such as a theodolite, a position finder, a level and the like is a positioning method commonly used in engineering sites, but when the pipe turns, the angle cutting mode of the elbow is simple, two-point lineation is often performed on lofting points and a to-be-turned position, so that the to-be-cut length, angle and the like of the elbow are determined, and then the construction is completed through oxygen acetylene gas cutting and electric welding. However, the machining mode is too simple, the cutting degree of the elbow and the angle are not controlled precisely, one steel pipe is 12 meters, the deviation is slightly in angle, the whole displacement of the pipe section can be caused, the control and the construction quality of the pipe position are not controlled tightly, and potential safety hazards are easily caused.

Disclosure of Invention

The utility model aims to provide an elbow mould for a large-caliber steel pipe, which can simulate the positions of two ends and a central point of an elbow, determine the parameters such as the length and the outer diameter of a straight pipe, the included angle of a bent pipe and the like, and pre-process the large-caliber steel elbow by taking the parameters as a template, thereby improving the installation and rush repair efficiency.

The technical scheme adopted by the utility model for solving the technical problems is as follows: an elbow mould for a large-diameter steel pipe comprises two straight pipes and a bendable elbow pipe, wherein the two straight pipes are respectively positioned at two ends of the elbow pipe, and the elbow pipe and the straight pipes can axially extend.

The elbow mould can simulate an elbow, two straight pipes in the elbow mould are accurately butted with a large-diameter steel pipe opening respectively, parameters such as the length and the outer diameter of the straight pipes and the included angle of the bent pipe are measured and determined, and then the straight pipes, the outer diameter of the bent pipe and the included angle of the bent pipe are taken as templates to perform preprocessing on the large-diameter steel pipe elbow, so that the installation and rush repair efficiency is improved. The bent pipe and the straight pipe can axially extend and retract to adjust the length of the straight pipe and ensure that the bent pipe is smoothly connected with the large-caliber steel pipe opening. The bent pipe can be bent, so that the included angle of the bent pipe can be adjusted to meet the connection of large-caliber steel pipe orifices with different included angles. The DN of the applicable large-caliber steel pipe is more than or equal to 800mm, and the DN is the nominal diameter.

Preferably, the bent pipe and the straight pipe are connected by an elastic element. Preferably, the elastic element is a corrugated pipe or a spring, one end of the corrugated pipe or the spring is fixed with the end part of the straight pipe, and the other end of the corrugated pipe or the spring is fixed with the end part of the bent pipe.

Preferably, through flexible union coupling between return bend and the straight tube, be equipped with the tubule between straight tube and the return bend, tubule one end is fixed with the return bend, and in the other end slidable inserted the straight tube, the tubule outer wall interval set up a plurality of braking arch, the straight tube be equipped with the protruding adaptation of braking correspond the hole.

Preferably, the return bend adopts the plastics material, is the corrugate, and perhaps, the return bend adopts the rubber material, and the bending angle scope is 10~ 90. The included angle of the bent pipe can be adjusted to meet the connection of large-caliber steel pipe orifices with different included angles.

Preferably, the outer diameters of the two straight pipes and the bent pipe are equal.

The utility model has the beneficial effects that: through the elbow die, the length and the angle of elbow cutting can be determined in a short time, the elbow processing efficiency is simplified, and the installation and first-aid repair efficiency of large-diameter pipelines is improved.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the spring connection.

Fig. 3 is a schematic structural view of the telescopic tube connection.

The labels in the figure are: the bending die comprises an elbow die 1, a first straight pipe 11, a second straight pipe 12, a spring 14, a thin pipe 15, a braking bulge 151, a corresponding hole 152 and a large-caliber steel pipe opening 2.

Detailed Description

The present invention will be further described with reference to the structures or terms used herein. The description is given for the sake of example only, to illustrate how the utility model may be implemented, and does not constitute any limitation on the utility model.

As shown in fig. 1-3, an elbow mold 1 for a large-diameter steel pipe comprises two straight pipes and a bendable elbow 13, wherein the two straight pipes are respectively located at two ends of the elbow 13, and the elbow 13 and the straight pipes can axially extend and retract.

The elbow mould can simulate an elbow, two straight pipes in the elbow mould are accurately butted with a large-diameter steel pipe opening respectively, the positions of two ends and a central point of the elbow are simulated, the length, the outer diameter and the included angle of the bent pipe and other parameters are measured and determined, and then the elbow mould is used as a template to perform preprocessing on the large-diameter steel pipe elbow, so that the installation and rush repair efficiency is improved. The bent pipe and the straight pipe can axially extend and retract to adjust the length of the straight pipe and ensure that the bent pipe is smoothly connected with the large-caliber steel pipe opening. The bent pipe can be bent, so that the included angle of the bent pipe can be adjusted to meet the connection of large-caliber steel pipe orifices with different included angles. The DN of the applicable large-caliber steel pipe is more than or equal to 800mm, and the DN is the nominal diameter.

Specifically, two straight pipes are set as a first straight pipe 11 and a second straight pipe 12, one end of the first straight pipe 11 is aligned and contacted with the large-caliber steel pipe opening 2, the other end of the first straight pipe is connected with one end of the bent pipe 13, one end of the second straight pipe 12 is aligned and contacted with the other large-caliber steel pipe opening 2, and the other end of the second straight pipe is connected with the other end of the bent pipe 13.

As a specific embodiment, the bent tube is connected with the straight tube by using an elastic element, the elastic element is a corrugated tube or a spring 14, one end of the corrugated tube or the spring 14 is fixed with the end of the straight tube, and the other end is fixed with the end of the bent tube 13, see fig. 2. As another specific embodiment, the bent pipe 13 is connected with the straight pipe through a telescopic pipe, a thin pipe 15 is arranged between the straight pipe and the bent pipe, one end of the thin pipe 15 is fixed with the bent pipe 13, the other end of the thin pipe is slidably inserted into the straight pipe, a plurality of braking protrusions 151 are arranged on the outer wall of the thin pipe 15 at intervals, and the straight pipe is provided with corresponding holes 152 matched with the braking protrusions. The stopper projection 151 cooperates with the corresponding hole 152 to prevent the tubule 15 from moving by an unnecessary external force.

As an embodiment, the bent pipe 13 is made of a plastic material and is corrugated, or the bent pipe 13 is made of a rubber material, the bending angle of the bent pipe 13 is adjusted within a range of 10 to 90 °, in general pipeline engineering, the angle of the bent pipe 13 is a plurality of fixed values, which are respectively 11.25 °, 33.75 °, 56.25 °, 78.75 ° and 90 °, and the included angle of the bent pipe 13 is adjustable to meet the connection of large-caliber steel pipe openings with different included angles.

As an example, the two straight and curved tubes 13 are of equal outside diameter.

The embodiments described in this specification are merely illustrative of implementations of the inventive concept and the scope of the present invention should not be considered limited to the specific forms set forth in the embodiments but rather by the equivalents thereof as may occur to those skilled in the art upon consideration of the present inventive concept.

Claims

1. The utility model provides an elbow mould for heavy-calibre steel pipe, its characterized in that, includes two straight tubes and flexible return bend, and two straight tubes are located the return bend both ends respectively, but the axial is flexible between return bend and the straight tube, through extending tube connection between return bend and the straight tube, are equipped with the tubule between straight tube and the return bend, and tubule one end is fixed with the return bend, and other end slidable inserts in the straight tube, and tubule outer wall interval sets up a plurality of braking arch, and the straight tube is equipped with the corresponding hole with the protruding adaptation of braking.

2. An elbow mould for a large diameter steel pipe according to claim 1 wherein the curved pipe is connected to the straight pipe by a resilient member.

3. An elbow mould for a large diameter steel pipe according to claim 2 wherein the resilient member is a bellows or spring, one end of the bellows or spring being fixed to the end of the straight pipe and the other end being fixed to the end of the bent pipe.

4. An elbow die for a large-diameter steel pipe according to claim 1, wherein the elbow is made of plastic and corrugated, or the elbow is made of rubber and has a bending angle in a range of 10 to 90 °.

5. An elbow mould for a large diameter steel pipe according to claim 1 wherein the straight pipe and the bent pipe are of equal outside diameter.